Table of Contents
What is the difference between a clastic sedimentary rock and a chemical sedimentary rock quizlet?
Clastic rocks form when bits of weathered materials are compacted and cemented together. Most limestones, rock salt, rock gypsum, flint, and chert are chemical sedimentary rocks that form when dissolved minerals precipitate from water.
What makes clastic sedimentary rocks different?
Clastic sediments or sedimentary rocks are classified based on grain size, clast and cementing material (matrix) composition, and texture. The classification factors are often useful in determining a sample’s environment of deposition.
How is chemical sedimentary rock formed?
Chemical sedimentary rocks Chemical sedimentary rock forms when mineral constituents in solution become supersaturated and inorganically precipitate. Common chemical sedimentary rocks include oolitic limestone and rocks composed of evaporite minerals, such as halite (rock salt), sylvite, baryte and gypsum.
What are some examples of organic sedimentary rocks?
Organic sedimentary rocks form from the accumulation of plant or animal debris. Examples include: chalk, coal, diatomite, some dolomites, and some limestones.
What do clastic sedimentary rocks look like?
Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Clastic sedimentary rocks may have particles ranging in size from microscopic clay to huge boulders. Their names are based on their clast or grain size. The smallest grains are called clay, then silt, then sand.
What kind of sedimentary rock is chalk clastic chemical or organic?
limestone
Chalk is a non-clastic carbonate sedimentary rock that is form of limestone compesed of the mineral calcite. The chemical composition of chalk is calcium carbonate (CaCO 3) , which is limestone made of mineral calcite.
What are the three types of sedimentary rocks?
Sedimentary rocks are of three basic types. These include clastic, chemical, and organic sedimentary rocks. Clastic sedimentary rocks are formed from the buildup of clatics: small pieces of fragmented rocks deposited as a result of mechanical weathering then lithified by compaction and cementation.
What are some examples of chemical rocks?
Chemical sedimentary rocks such as rock salt, iron ore, chert, flint, some dolomites, and some limestones, form when dissolved materials precipitate from solution. Organic sedimentary rocks such as coal, some dolomites, and some limestones, form from the accumulation of plant or animal debris.
Is limestone clastic or non clastic?
Limestone is a non-clastic sedimentary rock. Limestone is a common building material. Limestone is made of the mineral calcite. It often contains fossils. Limestone formed in the ocean from the shells and skeletons of dead sea creatures. Some of the fossils in limestone are too small to be seen without a microscope.
What is an example of a bioclastic sedimentary rock?
Bioclastic sedimentary rocks are formed when deceased organisms and other debris fall to the sea bed forming layers. As more layers accumulate, the pressure causes lower layers to be ‘squeezed’ into rock. Examples of this type of sedimentary rock are coal, limestone and chert.